(19)

(11)

EP 2 176 865 A1

(12)

(43) Date of publication: 21.04.2010 Bulletin 2010/16 (21) Application number: 08786937.6 (22) Date of filing: 06.08.2008

(51) International Patent Classification (IPC):  G11C 7/00(2006.01) (86) International application number: PCT/EP2008/060330 (87) International publication number: WO 2009/019284 (12.02.2009 Gazette 2009/07)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 09.08.2007 US 836210 (71) Applicant: International Business Machines Corporation Armonk, NY 10504 (US)	(72) Inventor: CHAINER, Timothy, Joseph Putnam Valley, New York 10579 (US) (74) Representative: Ling, Christopher John  IBM United Kingdom Limited Intellectual Property Law Hursley Park Winchester Hampshire SO21 2JN Winchester Hampshire SO21 2JN (GB)